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// Copyright 2016 The Gogs Authors. All rights reserved.
// Copyright 2016 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package cmd

import (
	"fmt"
	"os"

	"code.gitea.io/gitea/modules/generate"

	"github.com/mattn/go-isatty"
	"github.com/urfave/cli"
)

var (
	// CmdGenerate represents the available generate sub-command.
	CmdGenerate = cli.Command{
		Name:  "generate",
		Usage: "Command line interface for running generators",
		Subcommands: []cli.Command{
			subcmdSecret,
		},
	}

	subcmdSecret = cli.Command{
		Name:  "secret",
		Usage: "Generate a secret token",
		Subcommands: []cli.Command{
			microcmdGenerateInternalToken,
			microcmdGenerateLfsJwtSecret,
			microcmdGenerateSecretKey,
		},
	}

	microcmdGenerateInternalToken = cli.Command{
		Name:   "INTERNAL_TOKEN",
		Usage:  "Generate a new INTERNAL_TOKEN",
		Action: runGenerateInternalToken,
	}

	microcmdGenerateLfsJwtSecret = cli.Command{
		Name:    "JWT_SECRET",
		Aliases: []string{"LFS_JWT_SECRET"},
		Usage:   "Generate a new JWT_SECRET",
		Action:  runGenerateLfsJwtSecret,
	}

	microcmdGenerateSecretKey = cli.Command{
		Name:   "SECRET_KEY",
		Usage:  "Generate a new SECRET_KEY",
		Action: runGenerateSecretKey,
	}
)

func runGenerateInternalToken(c *cli.Context) error {
	internalToken, err := generate.NewInternalToken()
	if err != nil {
		return err
	}

	fmt.Printf("%s", internalToken)

	if isatty.IsTerminal(os.Stdout.Fd()) {
		fmt.Printf("\n")
	}

	return nil
}

func runGenerateLfsJwtSecret(c *cli.Context) error {
	JWTSecretBase64, err := generate.NewJwtSecretBase64()
	if err != nil {
		return err
	}

	fmt.Printf("%s", JWTSecretBase64)

	if isatty.IsTerminal(os.Stdout.Fd()) {
		fmt.Printf("\n")
	}

	return nil
}

func runGenerateSecretKey(c *cli.Context) error {
	secretKey, err := generate.NewSecretKey()
	if err != nil {
		return err
	}

	fmt.Printf("%s", secretKey)

	if isatty.IsTerminal(os.Stdout.Fd()) {
		fmt.Printf("\n")
	}

	return nil
}